Your team is building up a smart home iOS APP. The end users have used your company’s camera-equipped home devices such as baby monitors, webcams, and home surveillance systems. Then the videos are uploaded to AWS. Afterward, through the mobile APP, users can play the on-demand or live videos using the format of HTTP Live Streaming (HLS). Which combinations of steps should you use to accomplish this task? (Select TWO)

Answer options:

A.Create a Kinesis Data Firehose to ingest, durably store, and encrypt the live videos from the users’ home devices.
B.Use AWS Elemental MediaLive and AWS Elemental MediaPackage with Amazon CloudFront.
C.Transform the stream data to HLS compatible data by using Kinesis Data Analytics or customer code in EC2/Lambda. Then in the mobile application, use HLS protocol to display the video stream by using the converted HLS streaming data.
D.In the mobile application, use HLS to display the video stream by using the HLS streaming session URL.

Correct Answers – B, D
 
AWS provides a live streaming solution that combines AWS Elemental MediaLive and AWS Elemental MediaPackage with Amazon CloudFront to build a highly resilient and scalable architecture that delivers your live content worldwide. The diagram below presents the live streaming video architecture you can automatically deploy using the solution`s implementation guide and accompanying AWS CloudFormation template.
Option A is INCORRECT because Kinesis Data Firehose is not used for live streaming; instead, it is used for streaming data delivery.
Option B is CORRECT because AWS provides a live streaming solution that combines AWS Elemental MediaLive and AWS Elemental MediaPackage with Amazon CloudFront to build a highly resilient and scalable architecture that delivers your live content worldwide. 
AWS Elemental MediaStore is a video origination and storage service that offers the high performance and immediate consistency required for live and on-demand media. You can use AWS Elemental MediaStore to store assets that MediaLive retrieves and uses when transcoding, and as a destination for output from MediaLive.
Option C is incorrect because transforming the stream data to HLS compatible data using Kinesis Data Analytics or customer code in EC2/Lambda is not needed or irrelevant here.
Option D is CORRECT because the GetHLSStreamingSessionURL API is called to retrieve the HLS streaming session URL. When you have the HLS streaming session URL, provide it to the video player, which will be able to play the video.
AWS Docs for reference:
https://aws.amazon.com/solutions/live-streaming-on-aws/
https://docs.aws.amazon.com/medialive/latest/ug/medialive-ug.pdf#what-is